Horn



July 23, 1 929. H. M. HURLBERT HORN Filed May 13, 1927 J 7 lllllllllllllllll 0 1H 1 l .lllilillifilMHWWWWHHHflH 5|$ v 1 L 2 F 4v 9 I) J1 l\\\\a 6 ////M%%/ 1/ Z 7 INVENTOR O BY i ATTORNEY Patented July 23, 1929.

UNITED STATES HAROLD M. HURLBERT, OF GLENDALE, CALIFORNIA.

HORN.

Application filed May 13,

This invention relates to improvements in amplifying horns and sound conveyors, and its general object is to provide a radio loud speaker that is capable of reproducing sound in an extremely clear, accurate and exact manner due to the fact that the construction of the present invention is so formed to absorb all vibration before they reach the outlet opening thereof.

A further object of the invention is to provide a horn of the character set forth, that is extremely simple in construction, in expensive to manufacture and the sound passage thereof is of suflicient length to oooperate with vibrating absorbing material so that all vibration caused by operation and the like will be completely absorbed or removed.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, il-

lustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a sectional view taken ap-.

proximately on line l1 of Figure 2.

Figure 2 is a sectional view taken approximately on line 22 of Figure 1. :5 Referring to the drawings in detail the reference numeral 1 indicates an elongated container formed from metal or other like material and has arranged preferably in one corner thereof as shown in the drawings, a chamber 2 to accommodate the reproducing unit 3. The chamber 2 is provided with a hinged door 4 having a knob 5 thereon whereby the unit may be removed as will be apparent. The upper wall of the chamber is formed with an opening which is reinforced by an eyelet 6 through which is adapted to pass the cords leading to a radio set or the like.

Arranged in the container is a passage formed by a circular wall which forms the sound chamber and the wall tapers gradually from its small end 7 which is disposed within the chamber 2 to receive the unit, and is thence extended downwardly and curved upon itself as at 8 to provide an upturned portion 9 disposed in parallelism with the 1927. Serial No. 191,162.

portion first mentioned, is again extended downwardly to provide a relatively enlarged portion 10 which is likewise disposed in parallelism with the portion 9 and the first mentioned portion. The wall from the portron 10 is again curved upwardly upon itself and terminates in an enlarged outlet end 11 which is disposed at right angles to the small end of the wall as best shown in Figure 2 of the drawings.

Arranged within the container and disposed between the respective portions of the wall is material 12 preferably composed of rubber or like resilient material which includes absorbing qualities so that vibrations created by the sound waves in passing through said sound chamber will be entirely absorbed before reaching the outlet end 11 as will be apparent.

From the above description and disclosure of the drawings, it will be obvious that I have provided a neat and compact amplifying horn that can be conveniently arranged within a cabinet or supported in any appropriate place or manner due to the fiat walls of the container 1, and in view of the length of the sound chamber and the absorbing qualities of the material 12, all noises caused by vibrating of the parts will be absorbed before they have reached the outlet end 11, with the result, that the reception will be clear, accurate and exact.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

lVhat I claim is:

1. An amplifying horn of the character described comprising an elongated metallic container, a unit receiving chamber formed in said container, said container having a passage disposed therein and being formed by a circular wall, said wall providing a sound chamber which includes parallel portions and a portion arranged at right angles to the parallel portions, said sound chamber being connected at one end with the unit chamber and tapered gradually therefrom to its outlet end, and sound absorbing material arranged in said container and disposed between the walls thereof and the wall of the sound chamber.

providing the outlet for the chamber, said unit receiving chamber adapted to receive a unit for connection with the small end of the sound chamber, a hinged door for said unit receiving chamber, andsound absorbing material disposed between the Wall of the sound chamber and the Walls of the container.

In testimony whereof I aiiix my signature.

HAROLD M. HURLBERT. 

